1. Empiricism, namely understanding knowledge based on our five senses.
2. Rationalism, which is the understanding that establishes that reason is the most important thing to get the source of true knowledge or can be said to think logically.
3. Positiveism, is an understanding based on events that actually happened and also accompanied by logical thinking. in the flow of positiveism, if something is not a fact, then it will not be trusted
